Incandescent-electric-lamp socket.



A. WEBER, SR: INGANDESGENT ELECTRIC LAMP SOCKET.

APPLIOATION FILED OUT. 1, 1906.

Patented Mar. 16, 19(29.

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AUGUST WEBER, SR., OF SCHENECTADY, NEW YORK, ASSIGNOR TO WEBER ELEC-TRIH COMPANY, OF SOHENECTADY, NEW YORK, A. CORPORATION OF NEW YORK.

INGANDiESCENT-ELEG'IRIC-LAMP SOCKET Specification 61 Letters Patent.

latentec. March 16, 1909.

Application filed October 1, 1905. fileriai No. 336,81.

1'0 all whom itmay concern: Be it known that 1, AUGUST WEBER, Sr, a citizen of the United States, residing at Schenectady, county ofSchenectady, and State of New York, have invented certain new and useful Improvements in Incandescent-Electric-LamP Sockets, of which th following is a specification. The invention relates to such improvements and consists of the novel construction and combination of parts hereinafter do claimed.

scribed and, subsequently to the accompany- Reference may be ha ing drawings, and the reference characters marked thereon, which form a part of this specification; I

Similar characters refer to similar parts in the several figures therein.

Figure 1 of the drawings is a View in side elevation, witlrithe case broken away and shown in vertical section, of my improved inwith "the following descri candescent electric lamp-socket. Fig. 2 is a side elevation of the same with the case removed, viewed from a position at right anles to the view shown in Fig. 1. Fig. 3 is a ottom plan view of the parts shown in Fig. 1. Fig. 4 is a central, vertical section of the same taken on the broken line 44 in Fig. 1. Fig. 5 is a plan view of the inner flanged end of the screw-shell. Fig. 6 is a side elevation of the part shown in Fig: 2 inverted.

This invention re ates more particularly to the class of key-sockets for incandescent electric lamps.

The principal object of the invention is to increase the efliciency of, simplify, and render more safe, such a socket.

Other objects will appear in connection tion.

I have shown 1n the rawings a type of lamp-socket fully shown and described in U. S. Letters Patent No. 743,207, dated Nov. 3, 1903, granted to myself and others for incandescent electric lamp-sockets, to which patent reference may be had for a more complete understanding of the" structure of the socket.

asses the shaft, 5, of the key, 5, having earings in the frame, 7, confined between said blocks.

Mounted upon the shaft, 5, is a switchblock, 8, having the usual lost-motion connection with said shalt, said block being adapted to bear at all times upon the spring,

9, and being adapted, when it is desired to close the circuit, to bear upon the sprin contact, 10,- iorming one member of a bifurcated metal plate, 11, the shank of which is clamped between the porcelain blocks of the base, and the other member, 12, oi which projects through an aperture, 13., in the screw-shell, 1-1, mounted upon said base, said member, 12, being adapted to form the yielding contact for the central lamp terminal;

The construction thus far (less: ibed is substantially the same as that more 'r'ully shown and described in said Letters Patent No. 743,207, for which reason it wih be unnecessary to more fully describe the same in the present application.

In use, the rnotai frame, 7, is connected with one of the circuit Wires, and the screw shell, i l, with the other'circuit wire, said connections being made in any known manner, the constructions above described being substantially those shown and described in said prior patent. The screw-shell, i l, which is preferably madeol sheet-metal, has on its inner end. an introverted flange, 15, whereby it is attached iQ;tl1@ insulating base, which flange is intact and continuous opposite the oontachplate, 10. interposed between the screw shell, 1e, and the insulating base, 4, is a plate or washer, 16, of insulating material, which eFfectively separates the screw-shell, M, on one side of the circuit, from said contact-plate, 10, which is on the other side of the circuit, so that it-is impossible for a short circuit to be formed by a passage of the current directly from the plate, 10, to the screw-shell. The iutcrposition of the insulating p ate or Washer, 16, enables me to maintain the introverted end-flange; 15, of the scrowshell, integral, throughout suljistantially the whole circumlcrenoe of the shell, thus serving to strengthen and increase the durability and rigidity of the structure.

The insulating plate or washer, 16, may

be of any known material and form adapted block; a plate on one side of the circuit with posed between said parts in use, but also to time prevent a short circuit between the contact-plato, l0, and the screw-shell op posits said contact-plate.

A further feature of my invention relates to the more positive insulation of the screwshell and the flange on' the inner end thereof, from the neighboring central terminal-plate where the same passes through an aperture in said shell. Features of construction whereby this is accomplished is illustrated in F 6, and consists of a projection comprising a flange or rib, 18, formed u on the outer base of the inner porcelain book, i, integral therewith and adapted to' project downwardly between the arm, 12, of the terminal-plate, 11, and the cut edge oi the shell and flange, 15, where said terminal plate passes through the shell. This rib or flange, 18, not onl serves as insulation interlorms a positive stop for the screw-shell in assembling the parts, making it impossible for the shell to be placed suliiciently out of its proper position upon the porcelain block to cause danger of a short circuit in use.

Vihat I claim new and desire to secure by Letters Patent is i. In an incandescent electric lamp-socket and in combination, an insulating base; a

itch-block; means for operating the switchblcck; a plate on one side of the circuit with. whichthe switch-block is adapted to make break contact; a screw-shell mounted upon said. base in connection with the opposite side the circuit, and having opposite said contuct-olate a continuous introverted end-fiaiiigc; and an insulating plate interposed betweci'i said end-flange on the shell and said contact-plate in the line of movement of said contact-plate. I

in an incani'lesccnt electric lam P-SOQliGt and in coinbimrtion, an insulating base; a switch-block means for op rating the switch- ",vhich the switch-i l clr is adapted. to malts and break contact; screw-saell mounted up said in col ction with the op;-

ite side of the "cult, and having opposite said contac" its a continuous intro an insulating washer[ interposed betw :11 said shell and said in sulating base and said contact-plz'ite; an inclosing shell and cap; and an insulating} tor said shell.

3. In an incandescent electric lamp-socket and in combination, an insulating base; a.

switchblook means for operating the switchblock; a bifurcated plate mounted upon the base with one contact member or which plate the switch-block is adapted to make and break contact; a screw-shell mounted etween said screw-shell and said contact? member, said screw-shell having an aperture through which the other member of said bifurcated plate extends into position to be engaged by the central lamp terminal.

4. In an incandescent electric lamp socket and in combination, an insulating base; a screw-shell mounted u on the base in connection with one side of the circuit, and provided with an aperture; a contact-plate mounted u on said insulatin base in con nection with the other side of t 1e circuit, and having a contact-memberprojecting through said shell-aperture into position to make contact with a terminal on the said lamp, said insulating base having an integral pro ection interposed between, and insulating from each other, said contact-plate and the screwshell where the contact-plate passes through said aperture.

5. in an incandescent electric lamp-socket and in combination, an insulating base; a screw-shell hav ng an introverted end-flange.

mounted upon said base in connection with one side of the circuit, and provided with an.

aperture; a contact-plate mounted u on said insulatin base in connection with t e other side of the circuit, and having a contactmember projecting through said 'shell-aperture into position to make contact with a terminal on the said lamp, said insulating base having an integral projection interposed between, and insulating from each other, said contact-plate and the screw-shell with its introvertedggflange, where the con- 'tactplate passes through said aperture.

in testimony whereof, I have hereunto set my hand this 26th day of September, 1906.

AUGUST W BER, sR.

Witnesses I E. M. OREILLY,

J. Donseaon. 

